var tu3 = document.getElementsByClassName('ceng3img');
for (let i = 0; i < tu3.length; i++) {
    tu3[i].onmouseover = function () {
        tu3[i].style.top = -3 + 'px';
        tu3[i].style.transition = 'all 0.2s';
    }
    tu3[i].onmouseout = function () {
        tu3[i].style.top = 0 + 'px';
    }
}

var datu = document.getElementsByClassName('ceng5img');
for (let i = 0; i < datu.length; i++) {
    datu[i].onmouseover = function () {
        datu[i].style.top = -5 + 'px';
        datu[i].style.transition = 'all .2s';
    }
    datu[i].onmouseout = function () {
        datu[i].style.top = 0 + 'px';
    }

}

var tu5 = document.getElementsByClassName('ceng5-2img');
for (let i = 0; i < tu5.length; i++) {
    tu5[i].onmouseover = function () {
        tu5[i].style.top = -5 + 'px';
        tu5[i].style.transition = 'all 0.2s';
    }
    tu5[i].onmouseout = function () {
        tu5[i].style.top = 0 + 'px';
    }
}

var tu52 = document.getElementsByClassName('ceng5-2img2');
for (let i = 0; i < tu52.length; i++) {
    tu52[i].onmouseover = function () {
        tu52[i].style.top = 325 + 'px';
        tu52[i].style.transition = 'all .2s';
    }
    tu52[i].onmouseout = function () {
        tu52[i].style.top = 330 + 'px';
    }
}